Okay - I hope to answer all of the questions... if I miss something, let me know.
The firing pin spring, connector, and trigger bar are the same as found in the standard models.
I don't have a part number on the firing pin yet. There is a number stamped on the end of the firing pin: 2474.
Here are three firing pins with dimensions. Top: 9mm, middle: 10mm/45acp, bottom: reset model.
TMH with trigger spring installed.
Here's the trigger bar installed in the TMH.
Trigger spring with OAL dimension.
Trigger bar / trigger spring relative position (minus the TMH) right side.
Trigger bar / trigger spring relative position (minus the TMH) left side. Note, I had to prop up the side of the trigger spring to get it into proper position for the picture.
Randy